net/netfilter/xt_l2tp.c
Source file repositories/reference/linux-study-clean/net/netfilter/xt_l2tp.c
File Facts
- System
- Linux kernel
- Corpus path
net/netfilter/xt_l2tp.c- Extension
.c- Size
- 9211 bytes
- Lines
- 356
- Domain
- Networking Core
- Bucket
- Sockets, Protocols, Packet Path, And Network Policy
- Inferred role
- Networking Core: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/module.hlinux/skbuff.hlinux/if_ether.hnet/ip.hlinux/ipv6.hnet/ipv6.hnet/udp.hlinux/l2tp.hlinux/netfilter_ipv4.hlinux/netfilter_ipv6.hlinux/netfilter_ipv4/ip_tables.hlinux/netfilter_ipv6/ip6_tables.hlinux/netfilter/x_tables.hlinux/netfilter/xt_tcpudp.hlinux/netfilter/xt_l2tp.h
Detected Declarations
struct l2tp_datafunction l2tp_matchfunction l2tp_udp_mtfunction L2TPv2function l2tp_ip_mtfunction l2tp_mt4function l2tp_mt6function l2tp_mt_checkfunction l2tp_mt_check4function l2tp_mt_check6function l2tp_mt_initfunction l2tp_mt_exitmodule init l2tp_mt_init
Annotated Snippet
module_init(l2tp_mt_init);
module_exit(l2tp_mt_exit);Annotation
- Immediate include surface: `linux/module.h`, `linux/skbuff.h`, `linux/if_ether.h`, `net/ip.h`, `linux/ipv6.h`, `net/ipv6.h`, `net/udp.h`, `linux/l2tp.h`.
- Detected declarations: `struct l2tp_data`, `function l2tp_match`, `function l2tp_udp_mt`, `function L2TPv2`, `function l2tp_ip_mt`, `function l2tp_mt4`, `function l2tp_mt6`, `function l2tp_mt_check`, `function l2tp_mt_check4`, `function l2tp_mt_check6`.
- Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
- Implementation status: integration implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.